Electric paper-cutter.



C. R. MANNERING.

ELECTRIC PAPER CUTTER.

APPLICATION FILED MAY 19,1913.

1 ,1 22,523. Patented Dec. 29, 1914.

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CHARLES R. MANNERING, OF NEW WESTMINSTER, BRITISH COLUMBIA, CANADA.

ELECTRIC PAPER-CUTTER.

Application filedMay 19, 1913.

To all whom it may concern:

Be it known that 1, CHARLES R. MANNER- me, of the city of NewWestminster, in the Province of British Columbia, Canada, have inventedcertain new and useful Improvements in Electric Paper-Cutters, of whichthe following is a specification.

My invention relates to improvements in electric paper cutters, and theobject of my invention is to devise a paper cutter for hand use incutting patterns, borders, stencils, or the like out of paper, cloth, orother similar material, which cutter can be connected to, and operatedfrom, an ordinary incandescent lamp socket, and which shall be actuatedby alternating current, instead of direct current as in present machinesfor a similar purpose, thus doing away with expensive platinum pointsand a spark, as in direct current, and producing a simple, safe,inexpensive and easily handled machine. I attain this objectby the meansillustrated in the accompanying drawings in which Figure 1 isa'longitudinal vertical section on the center line of the casing, themechanism being shown in full. Fig. 2 is a plan of the paper cutter, topof easing being removed to show the parts. Fig. 3 is an end view,looking on the needle end, of the machine.

Similar letters refer to similar parts throughout the several views.

A is a casing which incloses and carries the working parts of mycomplete paper cutter.

B represents the electromagnetic coils, which are wound in series, andare mounted as shown on an iron baseplate C. This baseplate C may besecured to the casing in any suitable manner, such as that shown, thatis, by being held to the top of the casing A by screws passing throughthe casing into the baseplate.

Running along underneath the coils B in close proximity thereto is avibrator D, which consists of a thin steel bar, bent at its inner endand fixed to the baseplate C as shown in Fig. 1 in such a manner as togive it a spring like action. The outer end of this vibrator D hasattached to it a socket E, adapted to carry a needle F and having ascrew G for tightening the needle in the socket so that it will be heldperfectly firm therein.

H is a spring switch fastened to the side of the casing A, and having aterminal H Specification of Letters Patent.

Patented Dec. 29, 1914:.

Serial No. 768,592.

in connection with its fixed end. This switch H is adapted to be pressedby the user when handling the device on to a terminal I, also fastenedin the casing A, in order to complete the circuit and cause the machineto operate, as will be hereinafter more fully described. By releasing Hfrom contact with I the circuit is broken and the machine will cease towork.

Any ordinary incandescent lamp J is inserted in the electrical circuitto act as a transformer, or a transformer may be inserted, at aconvenient point between the main leads and the paper cutter terminals,to run in series with the coils B, so that the full pressure in the mainwires will not send current through the coils B, as this would be toostrong for the winding of the coils;

the insertion of the lamp J in the circuit, or of a transformer,consequently insures that less than the amount of current used by anordinary incandescent lamp will pass through the coils B in theoperation of the cutter.

K is the bottom of the casing A of my paper cutter, and is'made separatefrom the body of the casing. It is hinged at its inner end on a pin K asshown, and fits in between the sides of'the casing, being free to moveup and down therebetween. The pur pose of this is so that the machinecan be adjusted to different thicknesses of material to be out. Toprovide for this adjustment a plate L is fitted at a suitable positionbetween the sides of the casing A and firmly held thereto by screws orother similar means. This plate L has a threaded hole tapped in it toreceive the screw M, which is also passed through, but not threaded intothe bottom K of the casing, so that K will be lifted up or loweredaccording as the screw M is screwed in or out of the plate L, andconsequently the needle will penetrate more or less as K is raised orlowered as called for where the fabric is of greater or less thickness,said fabric being fed or passed upon the bottom K.

To provide for the speed adjustment of the needle a screw N is screwedinto and through the plate L. The point of this screw N can be broughtagainst the vibrator D to regulate its distance from the coils B, sothat the vibrator may be moved nearer to, or farther away from, thepoles, B B B and B of the coils, thus increasing or decreasing the throwof the vibrator. This screw l passes clear through the bottom K of thecasing and has no connection therewith, a clearing hole 0 being providedso that access may be had to work the screw N as required.

The wiring of the machine is as follows One wire is connected direct tothe innermost coil to carry the electrical current thereto and thence inseries through the other coils and to the terminal H The other wire Pleads direct to the terminal I, being connected thereto, from which itwill be seen, referring to Fig. 2, that when the spring switch H ispressed on to I the electrical circuit will be complete.

The action of my paper cutter is as follows :Attachment having been madeto a lamp socket, when the switch H is closed by the operator, bringingthe two terminals H and I in contact and completing the circuit, thealternating current passing through the coils B causes the vibrator D tomove up and down very rapidly toward and away from the poles B B B and Ethe vibrations varying as to the distance of the vibrator from thepoles. If then the'machine be laid on the material to be cut, theneedle, on the down stroke, will pierce it, and, as the action is veryrapid, the machine can be moved over the material to follow a line orcut out anything according to the will of the operator, cutting thematerial as if it were a knife. The sound of the device when inoperation is the well known buzz of a vibrator coil.

The machine must be used only with alternating current, as it is fromthe alternations that it derives its action.

It will be seen, therefore, that I have devised a simple electric papercutter which can be operated by alternating current from any ordinaryincandescent lamp socket and which is very convenient for hand use. Itwill be seen further that, since alternating current is used instead ofdirect current, the machine is inexpensive both to manufacture andmaintain, since no expensive platinum points are necessary, as in directcurrent devices to take care of the spark, for there is no spark in mymachine, A still further feature of my paper cutter is that, as it isused in an ordinary lamp circuit, very little electrical energy isconsumed in its operation.

lVhat I claim as my invention is 1. An electrically operated papercutter comprising a main casing, a bottom pivoted at one end of thecasing, electromagnets supported in the casing, a resilient armatureco-acting with the electro-magnets, a needle secured to said armature, aplate fitted and held between the sides of said casing and a set-screwextending through the pivoted bot tom and engaging said plate, said setscrew adjustably supporting said pivotal bottom as and for the purposespecified.

2. An electrically operated paper cutter comprising a main casing, abottom pivoted at one end of the casing, electromagnets supported in thecasing, a resilient armature coacting with the electromagnets, a needlesecured to said armature, a plate fitted and held between the sides ofsaid casing, a set screw extending through the pivoted bottom andengaging said plate, and means for ad justing the distance between thearmature and magnets.

Dated at Vancouver, B. (3., this 22nd day of April, 1913.

CHARLES R. MANNERING.

Witnesses:

J. N. ELLIS, JAMEs TAYLOR,

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. C.

